Rotary oil burner



March 11, 1924. 11,486,383

J. C. JOHNSON ROTARY OIL BURNER Filed Dec. 7, 1922 aw 6 4mm INVENTOR.

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A TTORNEY Tatented il/ilar, ll, 192d,

STATES .i'nssn c. sronnson, or oannaitio, camronmn.

ROTARY OIL BURNER.

Application filed December 7, 1922. Serial No. 805,470.

To all whom it may cone-em Be it known that 1, Jesse GLAUDE JOHN son, a' citizen of the United States, resid-' ing at 940 Arlington Ave, Oakland, inthe county of Alameda and State of California, have invented certain new and useful Improvements in Rotary @il Burners, of which the following is a specification.

The present invention relates to an improvement in rotary oil burners employing a centrifugal atomizer or atomizing cup for reducing the oil into a fine spray, and is more particularly an improvement in the general class described and set forth in my oo-pending application filed March 23, 1922, Serial No. 5%,989.

A further object of my invention is to provide an improved means or construction by which the oil is fed to the interior of the cup, and obtain a quicker and more efiective method ofoil supply to the revolving cup than has hitherto been obtained, my

purpose being to feed the oil in relatively small streams irrespective of the amount of oil admitted into the cup. "When thus applied, the progression of the oil through the cup toward the outer atomizing edge thereof will be as a series of relatively thin stream lines of oil which will break 0d the outer atomizing edge of the cup into a very fine spray. v

My invention-Joan best be seen and understood by reference to the accompanying drawings, where the improvement embodying myinvention is applied to an atomizi'ng cup of well known character and in which- Figurel, is a longitudinal vertical'section through the burner;

Fig. 2, is a cross-section on line A- A,

Fig. 3, is a perspective'view of the spider member withinthe 'atomizing cup; and

Fig. 4, is a side elevation of the spider member.

Referring to the drawings, where like designating characters indicate the same parts throughout the several views:

A rotary atomizing cup 1 is removably mounted upon the-free end of an axle 2,

connecting with any suitable mechanism (not shown) for rotating it and the cup. -Tl1e atomizing cup consists of a cylindricallyshaped casing, the outer open end 3 extending into the. fire-box, The opposite end 4 of the casing is partially closed by means of an inwardly directedflange 5.

Suitably secured within the atomizing cup 1 is a spider member (5., of cup-shaped contour. A series of longitudinally disposed helical slots '7, in spaced relation to each other, are formed through the contiguous portion 8 of its body, and forming grooves through its base 9. The body portion of the said spider member forming in conjunction with the aforesaid inwardly directed flange 5, an oil receiving chamber 10, at the inner end of the atomizing cup,

This spider member is in this instance provided for two purposes; first, that of supporting the atomizing cup, by means of a securing bolt 11, to the free end of the I axle 2, and secondly, that of forming a series of helically disposed oil orifices within the atomi'zing cup. 1, whereby, when the cup'is revolved, theoil, initially fed into the oil receiving chamber 10 of the atomizing cup, will be directed out of said chamber and deposited onto the interior surface 12 of the cup, in a plurality of relatively thin lines or streams extending laterally toward the openend. 1

This is of considerable importance, asthe atomizing cup, whenrevolving at a high speed, causes the oil to be discharged by centrifugal force, through the helioally disposed slots of the spider member and projectcd forward onto the interior surface of the atomi-zing cup. In actual operation, it

found that the fuel oil delivered to the receiving chamber 10 is more freely discharged'ftherefrom and in greater quantities,

by means of said helical slot construction of the spider member, than-if the slots of thesaidspider member were arranged longitudinally and in axial alinement with the cup.

The angle of entrance and discharge of the fuel oil by means of said spider member is in such proportions as to provide for an increased bulk of fluid. The size of the helically bored spider member, including the cup, may, of course, be varied in accordance with variations in size of the burners in which they are to be used. The direction of motion is shown by an arrow. The supply of fueloil is regulated by a controlling valve, (not shown) so that the feed of oil may be increased. or diminished.

design wish it understood that it ma be varied ithin the limits of the scope of the eieims;

similarly, fchat the materials and finish of the severe]. parts may Toe such as file experience and judgment of .the msniifsoimrer may'dicteice,

What is claimed as new is L In combination with a rotary atomizing cup, a, spider: member of eLip-shapedv contour having a base and. a contiguous body portion, said body porizion being provided with a phu'aliiy 'ofv helicaliy disposed slots in grooves through the and terminating said base.

2. In combination with e rotary stemming CLi} ),'2L cupped spider inembei", having a. base and a, contiguous body portion provided with is more ity of heiiceliy memes 2i plurality of heiiceiiy disposed I slots, in

spaced relation to each other, and ending Cup, a; cup-shaped spider member, iisi ing a base and a contiguous body portion said body portion being provided with a piumidisposed slots, in spaced relation to each other, and) terminating in grooves through the said base, the helix of sziid slots being in a direction opposite to the "rotation oi the a tomizing cup.

in testimony whereof I haveafiixed. my

signature in we presence of two Wimesses.

JESSE C. JG'HNSQNB Witnesses A. J. -BRADLEY, M; Cfim ismmsmm 

